National Bank Open: Gabriela Ruse vs Anastasia Potapova

Platform comparison

Market context

Polymarket is pricing this USDC-settled, Polygon-based contract at **0% YES** for Gabriela Ruse to advance, which implies the market is effectively assigning no chance to a Ruse win or to any live path that has not yet been reflected in the order book. On the face of it, that is far below the pre-match tennis consensus: Tennis.com listed Anastasia Potapova as the projected winner at 59% for the Round 2 meeting, while Sky Sports carried the fixture as a live National Bank Open match on 4 August 2026.[2][1]

That gap is easier to read when set against the player context. Potapova entered the event as the higher-ranked player, with WTA rankings shown at 27 versus 77 for Ruse, and the head-to-head record was 0–0, so there was no prior matchup history to anchor the market.[3][4] The match was also framed as a second-round hard-court contest in Toronto, which generally favours the more established tour-level player, but Ruse had already progressed through the first round, so traders on the conditional token should be watching for any sign of momentum rather than relying on ranking alone.[4][9]

For Polymarket users, the practical catalysts are straightforward: the official match start, any in-play retirement, and whether the fixture is completed within the market’s 7-day settlement window. Live listings across broadcasters and scoreboards placed the match on Court 4, with varying start-time estimates, so schedule drift is a real operational risk if play is delayed or suspended.[2][11][14] If the match is not played at all, ends level, or drifts beyond the deadline without a winner, the contract resolves to 50-50 under the market rules rather than to either player.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.